A study on the promotion of knowledge acquisition and behavioral change regarding periodontal disease

Last registered on January 31, 2023
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Pre-Trial

Trial Information

General Information

Title
A study on the promotion of knowledge acquisition and behavioral change regarding periodontal disease
RCT ID
AEARCTR-0008861
Initial registration date
March 05, 2022

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
March 07, 2022, 2:03 PM EST

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Last updated
January 31, 2023, 9:47 AM EST

Last updated is the most recent time when changes to the trial's registration were published.

Locations

Country
Japan
Region

Primary Investigator

Name
Ayako Matsuda
Affiliation
Kansai University
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Other Primary Investigator(s)

PI Name
Kazuhito Ogawa
PI Affiliation
Kansai University
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PI Name
Misato Inaba
PI Affiliation
Kindai University
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PI Name
Taeko Moriyasu
PI Affiliation
Nagasaki University
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PI Name
Tetsuya Kawamura
PI Affiliation
Tezukayama University
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PI Name
Toshihiko Nanba
PI Affiliation
Kyoto University of Advanced Science
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PI Name
Tomohisa Okada
PI Affiliation
Daito Bunka University
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Additional Trial Information

Status
On going
Start date
2022-03-18
End date
2023-03-31
Keywords
Behavior, Health
Additional Keywords
JEL code(s)
I12
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
In this research, we study causal impacts of interventions which provide information on oral health, especially how to prevent periodontal disease. By conducting online surveys and providing information on prevention and treatment of periodontal disease to randomly selected individuals, we aim to study whether and how people change their perception/behavior on oral health.The third survey asks respondents the same set of questions plus new questions to see whether the intervention persist or not.
External Link(s)

Registration Citation

Citation
Inaba, Misato et al. 2023. "A study on the promotion of knowledge acquisition and behavioral change regarding periodontal disease." AEA RCT Registry. January 31. https://doi.org/10.1257/rct.8861-1.1
Sponsors & Partners
Experimental Details

Interventions

Intervention(s)
This study randomly provides information on how to prevent periodontal disease to 900 individuals in Japan. Our subjects are clients of a major online survey company. We randomly assign each subject to one of the two groups and give information via online.
Intervention Start Date
2022-03-18
Intervention End Date
2022-06-15

Primary Outcomes

Primary Outcomes (end points)
The primary outcomes include perceptions and behavioral changes against periodontal disease. These outcomes are measured by comparing the baseline and endline surveys across groups. The third survey is desinged to measure whether the intervention persists or not.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
We conduct a survey asking for their perception and behavior about oral health. The survey includes quiz on periodontal disease and its prevention. Subjects in treatment group receive information on quiz answers and the total number of correct answers along with the baseline survey. Subjects in control group are asked to answer the baseline survey, which does not include quiz answers nor the total number of correct answers.
Experimental Design Details
Not available
Randomization Method
Stratified randomization by a computer
Randomization Unit
Individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
NA
Sample size: planned number of observations
900 individuals
Sample size (or number of clusters) by treatment arms
450 individuals * 2 groups
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
Research Institute for Socionetwork Strategies, Kansai University, Japan
IRB Approval Date
2022-02-03
IRB Approval Number
No. 2021033
Analysis Plan